Elevator-door-locking system



Feb. 27, 1923.

W. H. HARTMAN ELEVATOR DOOR LOCKING SYSTEM Fil 3d NOV. 24, 1920 5 sheias-sheefi l v WITNESS INVENTOR M M. f/fllrr/ymv Jule ATTORNEYS Feb. 27, 1923. 1,44 ,794

w. H. HARTMAN ELEVATOR DOOR LOCKING SYSTEM Filed Nov.- 8 1920 5 aheets-sheet 2.

WITNESS INVENTQR a awr qm' ATTORNEYS W. H. HARTMAN ELEVATOR DOOR LOCKING SYSTEM F b. 27, 1923. v

(5 sheet-)s-sheet 5 Filed Nov. 24, 1920' a W R mm mm N. W m h WITNESS 1 ATTORNEYS l. the door open ith th lfiousinjury...

4O geous fez-itures, some-of which-with,- he

I cannot; then be Fatented Feb. 27, 1923 Miran v PA-TENT o-FFi-sc-E;

WILLIAM H. 'HARTIJI N, or LOS ANGELES, CALIFORNIA, essilenon 'IO RANDALL CONTROL AND HYDROMETRIC oonronsrron, or Los- ANGELES, CALIFORNIA, A

CORPORATION OF CALIEQRNIA.

niinvnron noon-tooxmo sYsrnivr.

Application ifiled November 24,1920. Serial No! isi6,21q.i

To allwhom itmdg concern: V i 7-;

Be it knownithat I, VVILLIAM'HL HART MAN, a citizen of the United States, anda resident of Los Angeles, county of Los Ange-les, State of California, have invented certain new and. useful Improvements in Elevator-Door-Locking Systems, of Y which the following is a specification.

The invention relates to, elevator door operating devices and partioularly' to means for locking the door against opening move-- rnent."

-Most elevators are provided with shaft doors havingv looks which function to lock the door against opening movement when the dooris fully; closedr Many elevator doors are provided with motors operatedby air-i under pressure; for openingand closing -.door, so that the lock does not operate, per- -;1 nitting the door; to-be subsequently opened without operating the lock; Tl1isis a.source of constant danger sin'ce it perinitsa person in the-hall-Wey Offit building to move resultant; liability of An object of my inventioii is-to provide means for lookingjthedoor against opening v m nt en. it i W Q lynr 1 y i closed, so; that if ,it-is loiijlyipapti ll closedp-lt pt mi l by a person i in th hallay.

A further I [prov de an GlGVEI tOIIT'ClQO F ,lock ng" system .as-

the door.

The invention possesses other advantaforegoing, willibe set :forth at length int'he following description where I sl allgoutline in full-thatd-orn of the 1 invention-Which I have selected for illustration in thezidraiv V ingsaccompanymg and forming part of the present specification." InE'sTaid drawings, I

have shown two embodiments of my invention, but it is to be understood that I do not.

vFigure 1 is an elevation of an: elevator door operating systememhodying my inven-" shown in .Fig; '2' parts the'reof beinghroken ma be mounted on the an of'the elevator hatohvvgay, 'one'n oto'r being provided for I p 7 p feach'door, orthe mechanismmaybemount thedoors." It frequentlyoccurs that the air The "particular" door; moving mechanism i object of invention to nb-ove-set forth, -3vhich maybe. releasedtogintocy1i"ler 3; moves th 'TPBI IH-li) the door; tofl-be moved Open 'ljo'nly when the elevator caris brought-to; rest-at ,PrO Wi e P i- -'P lF C- iQ B' 1 1170 1 enda-i'which is" adapted: to be. engggedby '7 1 the floor at which it is desired to open the door. The learn rocks the l8V61"9,--the1 tion.'- ii r .w V Figure 2 is anelevation' of a fragment. of the system showninFig. 1."

3 is an elevation jofthe jfiragment' I away.

l-p Fig. 4 is a plfan vievifo'fv thepartsshown in l *4 10 2 Fig. 5"is an elevation of a'modified form ofsystem.- n

Fig. 6 is {iii-elevation of a; fragment of'the system shown in Fig/5', parts thereofbeing broken awayf V. i ;jf;r i The door opening and vclosing mechanism ed on'the'elevator eag anm one moto r I I serves to, operate allot the doorsin hatohway, as Sl'lQTWIlJlIl ,iny co-pendi'ng. ap"-;

U! S. Patent-Office ,on Septfl3, 1920f. ligln'the nism mounted on the wall .of'the hatchvvay. it

shownl forms' no pa.rt of,thelpresent invention' and any;.-.suitahle, form of :veppara-tus mayhel employedfor'ithat purpose In the.

arrangementflshown' in:Figlll a I ;h-ave;.eni- I r I oylinders 2 3 ini whi ch are disposed pistons:cgn nectedhy the Iro d Admissiorrof v air unden. pressure .intofcylinderj;2 ,iiioves the' rodio therightlandladmission of 3111- ployed a fluid"o erated--m6t r h -vin two,

connectedf tor the source or ,iansupply fa'nd to the'cylinders and ivvhich-is alsoprovided" with-L an ed eust porthso that when 'aifr is l'lQWiilg intojone.cylindeiiit is exhausting frorntheothenf The valvelever is connect- .1

cam orshoe carried the elevator car, thetf cam or shoe beingmo-vable so that it con tacts with the pin 12-as the elevator reaches by operating theval've 5 to open the door.

The release of the can; "7y the operator moves 7.5 lplic'ation Serial Number 409,'758,"filedi in the] n I v rod 'tofthe left. '90 The admiss on oi? intothe respectivefoyl "inders .controlledhy the valve 5,)wh. his

the valve to shut -the door. The door is moved by the lever 13, fulcrumed at its upper end to the hatchway and connected at its lower end to the door 1%. Intermediate its ends, the lever is connected by the link to the cross head 16, secured to the piston rod 4. 7

Means are provided for locking the door against opening movement from a plurality of positions, including the fullyclosedposition, and oneor more partly open positions. Arranged onthe rear face of the cross head 16 a. stop 17 which is engaged by teeth 18 on the latch '19, pivoted to the stationary cross 21,, The latch 19 is provided with "a plurality of spaced teeth 18 and the suc cessive teeth drop hehind the stop 1721s the door approaches theclosed. position and prevent opening movement of the door by persons other than the elevator operator, The teeth are arranged so that when the stop is in engagement with the first tooth thedoor is partly "open; when it 'is in engagement with thesecond tooth, the door is open a lesser amount and when it is in engagement with the thirdtooth, the door is fully closed.

Meansareprovided for raising .the latch to release the"doo r when it is desired to open it. Mounted on thelever 7 isaroller The cam surface 23 is 'so shaped that when ill? 7 isrocked in the opposite direction to operate the door closing means the latch is lowered so that its teeth lie in the :patl1.'of"the"stop, 'Should the door fail to fully close, for some reason, the'latch will "prevent it from heing moved open froin its partly closed position.

' formef'construction in whi'eha single cylso'i l 'va lve 27'is operated by-the rod 28 con 1 31 which is connected tothe door, as heretotion, so thatthe door is held locked in'the fore described, The cross head provided on its upper surface with a plurality of latch 3 3 as thedo'orapp-roaches closed posiclo sedpositionend inone or more partially ind'erairigmotor '25 isus' ed to open and close the: do or. in tl11Sf,COI1StI'HCt1OI1, the air con-- to. the;lever29,'which is equivalent in 1 closed positions. l/Vhen'it'is desired to open the door, the latch is raised by the sliding cam .34; connected to the lever of the control means for moving thedoor, means for looking the door in 'a plurality of positions against an opening movement, and means for simultaneously 'controlling the door moving means and for operating the locking means. i

2. In combination, an elevator 'shaftdoor',

means for moving the door toward its open position, means for controlling the fmovin'g means, means for locking the door in a plurality of positions, 'and'means for insuring that the locking means isoper'a'tive except when the control for the door moving means is operated to move thedoor toward its open position. i I V '3; The combination with an elevatorfsh'aft door, of means for movingthe' door toward closed position, of a latch arranged to'en gage the door moving means to lock the door against opening movement "in a plurality of posltlo'ns' e 4:. The combination with an elevator door,

, a 1. In combination, an elevator "shaft door,

of means for movingth'e door and a latchengaging'the door moving means for locking the door against opening movement 1n a plurality of positions. 1 c h 5. The combinationlwithan elevator door, of' a fluid operated motor, a crossh'ead on said motor connected "to said door and a latch engaging saidl'cr'o'ss head and adapted tohold it at a plurality of positionsaga-i'nst opening movement of thedoor;

6. The combination with anele'vator door,

of a fluid operated motor, a valve for controlling the operation of said motor,a'cross head onsaid'motor connected to said'door, a latch adapted to engage said crossjheadfand adapted to hold it; at a'plurahty of 'positions against openingmovement otthe door and means for concurrently operating said valve A V and latchQ spaced teeth 32 which 'areengaged by the In testimony whereof, I have hereunto set my hand.

WILLIAM ll. HARTMAN. 

